| Name | Mary De Ros | |
| Gender | Female | |
| Person ID | I1593 | Royal family |
| Last Modified | 15 Sep 2005 | |
| Father | Piers De Braose | |
| Family ID | F790 | Group Sheet | Family Chart |
| Family 1 | Sir Ralph COBHAM | |
| Family ID | F791 | Group Sheet | Family Chart |
| Last Modified | 15 Sep 2005 | |
| Family 2 | Thomas Of Brotherton, Earl Of Norfolk, b. 1 Jun 1300, Brotherton, Yorkshire, England  d. 4 Aug 1338 (Age 38 years) | |
| Marriage | Abt 1328 | |
| Family ID | F611 | Group Sheet | Family Chart |
| Last Modified | 15 Sep 2005 | |
